Packing for stuffing boxes and the like



UNITED STATES PATENT OFFICE.

PACKING FOR STUFFING BOXES AND THE LIKE.

No Drawing.

T 0 all to ham it may concern Be it known that I, ALFRED JAMES BAILEY, a subject of the King of Great Britain and Ireland, residing at 35 Lake House road, Wanstead, London, E, 11, England, have invented new and useful Improvements in Packings for liitufiing Boxes and the like, of which the following is a specification.

The invention relates to comoressible metallic packings for stufiing boxes and the like, and is an improvement in or modification of the packing described in the specification of my Letters Patent of the United. States, No. 1,158,770, dated November 2nd, 1915. p

The packing described in said specilication consisted of a specially prepared metal powder and other suitable substances and. materials, to which was added a small quantity of powdered cork for the purpose of increasing the resiliency of the mixture.

The object of the present invention is to increase the resilient properties of the packing covered by said Letters Patent without impairing the lubricating qualities of the packing.

This object is attained by the addition to said packing of a small quantity of powdered mica, by which is meant mica reduced to such a state oi subdivision as to pass through a fine-mesh sieve, say, a sieve having 60 meshes to the square inch.

The substances and materials other than powdered mica to be used in the case of the packing of the present invention may be the same as those specified in the above referred to specification, and are preferably used in the proportions mentioned therein, while the quantity of powdered mica which may be added to said substances, when the lat- Specification of Letters Patent,

Patented Feb. 1, 1921.

Application filed June 2, 1919. Serial No. 301,275.

ter are used in the proportions iven in said specification, may bel lb. in t e case of a packing for use with steam engines and 2 White metal 28 lbs.

Powdered talc 1 lb. Powdered graphiteruin- 1% lbs. Powdered cork lb. Powdered mica i- 1 lb. Fat (engine tallow) 111; lbs. Carded asbestos 1 lb.

The quantity of powdered mica used and the relative proportions of the other ingredients of the packing may be varied within certain limits, and are not to be confined to the amounts mentioned above.

Having now described my invention, what I have invented and desire to secure by Letters Patent of the United States is as follows A packing composition, comprising substantially 28 pounds of pulverized white metal, one pound of powdered talc, 11} pounds of powdered graphite, one-half a pound of powdered cork, 1% pounds of tallow, one pound of carded asbestos, and from one to two pounds of finely powdered mica according to the use to which the packing is to be put.

In testimony whereof I have signed my name to this s ecification.

AL RED JAMES BAILEY. 

